The Piececlopedia is intended as a scholarly reference concerning the history and naming conventions of pieces used in Chess variants. But it is not a set of standards concerning what you must call pieces in newly invented games.

The Piececlopedia: Berolina Pawn

Historic remarks

The Berolina Pawn has been introduced by E. Nebermann in 1926. The pawn
is named after the city of Berlin. It is one of the most popular fairy
chess pieces, because its movement rules are a logical twist of the rules
for the pawn.

Movement rules

Berolina paws can only move forward. When a Berolina pawn makes a non-capturing
move, it goes one square diagonally forwards. When a Berolina pawn is still
on its original square on the second row, it can make a non-capturing move
diagonally forwards of one or of two squares - if it moves two squares,
the first square must be empty. A pawn captures one square vertically forwards.

When a Berolina pawn has moved two squares forwards, the opponent has
the possibility to take it en passant: in the directly following
turn a (Berolina) pawn of the opponent may take it also on the square that
was passed by.

When a Berolina pawn reaches a promotion square, that is, a square on
the last row of the board at the opponents side, it promotes. The owner
of the Berolina pawn may decide to which piece the pawn promotes. In general,
the choice is between queen, rook, knight, bishop, or any non-standard
non-royal chess piece that is present in the array (but, of course, not
a pawn or Berolina pawn.)

Movement diagram

The positions where the pawn can move to without taking are marked with
a green circle; the positions where the pawn can move to with taking are
marked with a red circle.

If a game of chess were played with one army containing normal pawns, and the other of Berolina pawns, who would have the advantage? In other words, which is more powerful? It would seem that regular pawns are better at teamwork, while Berolinas are better solo, but what does experience tell?

Before discovering that this piece had already been invented I saw the possibility of it and thought of the name Yeoman - as one step above the peasantry that the standard Pawn represents. It is certainly a snappier name.